In the steady state, cardiac output equals. venous return. Factors that cause hypereffective heart. Sympathetic stimulation can increase the effectiveness of the heart via: (2) increasing the strength of heart contraction. Factors that can cause a hypoeffective heart: (1) coronary artery blockage.
Thursday, March 19, 2015 - 11:09. Ed Sheeran has added yet another amazing accolade to his collection with the news that his global smash hit sophomore album X has hit the 2 million sales mark, joining a select band of chosen superstars to hit the same achievement.
My print column this week examines whether Michael Jackson really sold 750 million albums, as many news outlets reported after his death late last month. An engineer in Paris, Guillaume Vieira, has compiled his own totals for his Web site Fan of Music, putting Jacksonâs sales at 205.5 million through last August.